﻿<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
      <!-- 提示区 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable=false
      >
      </el-alert>
      <!-- 步骤条区 -->
      <el-steps
        :active="activeIndex-0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- tab栏区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          tab-position="left"
          style="height: auto;"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane
            label="基本信息"
            name="0"
          >
            <el-form-item
              label="商品名称"
              prop="goods_name"
            >
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item
              label="商品价格"
              prop="goods_price"
            >
              <el-input
                v-model="addForm.goods_price"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item
              label="商品重量"
              prop="goods_weight"
            >
              <el-input
                v-model="addForm.goods_weight"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item
              label="商品数量"
              prop="goods_number"
            >
              <el-input
                v-model="addForm.goods_number"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item
              label="商品分类"
              prop="goods_cat"
            >
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps "
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane
            label="商品参数"
            name="1"
          >
            <!-- 渲染表单的item项 -->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableDate"
              :key="item.attr_id"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  v-for="(cb,i) in item.attr_vals"
                  :label="cb"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane
            label="商品属性"
            name="2"
          >
            <el-form-item
              v-for="item in onlyTabData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals">{{item.attr_vals}}</el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane
            label="商品图片"
            name="3"
          >
            <!-- action 表示图片要上传的地址 -->
            <!-- headers 因为上传组件没有调用axios,所以需要设置请求头 -->
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button
                size="small"
                type="primary"
              >点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane
            label="商品内容"
            name="4"
          >
            <!-- 富文本编辑器组件 -->
            <quill-editor v-model="addForm.goods_introduce">

            </quill-editor>
            <!-- 添加商品的按钮 -->
            <el-button
              type="primary"
              class="btn_add"
              @click="add"
            >添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览 -->
    <el-dialog
      title="图片预览"
      :visible.sync="previewVisible"
      width="50%"
    >
      <img
        :src="previewPath"
        alt=""
        width="100%"
      >
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";
export default {
  data() {
    return {
      activeIndex: "0",
      // 添加商品的表单数据对象
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        pics: [],
        // 商品详情描述
        goods_introduce: "",
        attrs: [],
      },
      // 添加商品表单验证规则
      addFormRules: {
        goods_name: {
          required: true,
          message: "请输入商品名称",
          trigger: "blur",
        },
        goods_price: {
          required: true,
          message: "请输入商品价格",
          trigger: "blur",
        },
        goods_weight: {
          required: true,
          message: "请输入商品重量",
          trigger: "blur",
        },
        goods_number: {
          required: true,
          message: "请输入商品数量",
          trigger: "blur",
        },
        goods_cat: {
          required: true,
          message: "请选择商品分类",
          trigger: "blur",
        },
      },
      // 商品分页数据列表
      catelist: [],
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
        expandTrigger: "hover",
      },
      // 动态参数列表数据
      manyTableDate: [],
      // 静态列表数据
      onlyTabData: [],
      // 上传图片的URL
      uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
      // 图片上传组件的headers请求头对象
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      // 预览路径
      previewPath: "",
      previewVisible: false,
    };
  },
  created() {
    this.getCateList();
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
  components: {},
  methods: {
    // 获取所有商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类数据失败!");
      }
      this.catelist = res.data;
      console.log(this.catelist);
    },
    // 级联选择器选中变化,会触发这个函数
    handleChange() {
      // console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    // 触发切换Tab动作
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择商品分类!");
        return false;
      }
    },
    async tabClicked() {
      // 访问动态参数面板
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: "many",
            },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数列表失败!");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTableDate = res.data;
        console.log(this.manyTableDate);
      } else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: "only",
            },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取静态属性失败!");
        }
        console.log(res.data);
        this.onlyTabData = res.data;
      }
    },
    // 处理图片的预览效果
    handlePreview(file) {
      console.log(file);
      this.previewPath = file.response.data.url;
      this.previewVisible = true;
    },
    // 处理移除图片的操作
    handleRemove(file) {
      // 1.获取将要删除的图片临时路径
      const filePath = file.response.data.tmp_path;
      // 2.从pics 数组中,找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex((x) => x.pic === filePath);
      // 3.调用数组的 splice 方法,把图片信息对象,从 pics 数组中移除
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },
    // 监听图片上传成功事件
    handleSuccess(response) {
      console.log(response);
      // 1.拼接图片信息对象
      const picInfo = { pic: response.data.tmp_path };
      // 2.将图片信息对象,push到pics数组中
      this.addForm.pics.push(picInfo);
      console.log(this.addForm.pics);
    },
    // 添加商品
    add() {
      this.$refs.addFormRef.validate(async (valide) => {
        if (!valide) {
          return this.$message.error("请填写必要的表单项!");
        }
        // 执行添加业务逻辑
        // lodash cloneDeep(obj) 深拷贝 (互不相干的两个对象)
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = form.goods_cat.join(",");
        // 处理动态参数
        this.manyTableDate.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          };
          this.addForm.attrs.push(newInfo);
        });
        //静态属性
        this.onlyTabData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(newInfo);
        });
        form.attrs = this.addForm.attrs;
        console.log(form);
        // 发起请求,添加商品
        // 商品的名称必须是唯一
        const { data: res } = await this.$http.post("goods",form);
        if (res.meta.status !== 201) {
          return this.$message.error("添加商品失败!");
        }
        this.$message.success("添加商品成功!");

        // 跳转页面
        this.$router.push("/goods");
      });
    },
  },
};
</script>

<style scoped lang="less">
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
</style>